prof. Erich Leitgeb

Graz University of Technology, Austria

Combined Optical Wireless and RF in Different Hybrid Communication Scenarios for Data Transmission in Future Network Applications

Abstract: In this contribution Optical Wireless Communication (OWC), well known as Free Space Optics (FSO) in combination (as hybrid transmission method) with other telecommunication technologies (including WLAN and satellite communications) is presented. Modular communication systems are considered, which allows worldwide access to the Internet or other networks by combining satellite communications, FSO, Wireless LAN, Local Multipoint Distribution System (LMDS) and DVB-T (terrestrial digital video broadcast). Current and future applications of OWC and hybrid solutions also on deep space missions and for autonomous driving systems (for cars, ships and planes) in combination with 5G networks are presented.

Wireless LAN offers connectivity to mobile users in a network cell, Free Space Optics allows quick installation of broadband fixed wireless links instead of cables and satellite communications provides a backbone between distant locations in the world. DVB-T is the current video broadcast standard (instead of former analogue TV) and will also be used for Internet-access (see project SEE TV-WEB). Different scenarios (and results) using modular wireless technologies are shown. Hybrid solutions are also used more and more for data communication on deep space missions and in applications for autonomous driving (in combination with 5G networks).

prof. Giuseppe Macchiarella

Politecnico Milano, Italy

Trends in Microwave Filters and Multiplexers

Abstract: The rapid growth of communicating systems in the last years has impacted in the technological and structural solutions of many component sub-systems. In particular filter and multiplexers (selective combiners) have passed through a deep evolution in the last decade. The first (and in many cases the most important) request has been the size reduction with the least possible insertion losses; solutions spanning from classical planar technology to high sophisticated monolithic integrated circuits have been proposed with specifically developed design procedures. Another important request in many application (mobile, space) is today represented by very high selectivity which calls for the introduction of transmission zeros in the frequency characteristic. Also in this case new topological and technological solutions have been devised and are today implemented in advanced systems. Regarding the multiplexers, their function in some application area (e. g. the mobile communications) is becoming today more complex that the simple combination (or separation) of frequency channels, and again new advanced solutions and implementations have been introduced.

In this talk the current state of art of microwave filters and multiplexers is illustrated with reference to the most important application areas. Several examples are introduced and discussed both referring to the conceptual design solutions adopted and to the technological implementation.

prof. Buon Kiong Lau

Lund University, Sweden

Terminal Antenna Design for Future Wireless (IEEE Distinguished Lecturer Program, invited by MTT/AP/ED/EMC joint Chapter of Czechoslovakia Section of IEEE)

Abstract: Massive MIMO, full-dimension (FD) MIMO, millimeter-wave and small cells are some popular candidates for the 5th generation (5G) wireless communication systems. However, as much as these technologies present exciting new challenges for antenna design, the conventional design framework is expected to remain, partly due to the current emphasis on non-antenna issues. Conventionally, terminal antennas are designed based on simple, and often unrealistic criteria, including an emphasis on antenna performance in free space. Moreover, the need for compact multi-antenna implementation makes it even more challenging to deliver efficient antenna designs. Though poor antenna performance in reality is largely overlooked for different reasons, future wireless systems with high performance requirements will greatly benefit from a more comprehensive antenna design paradigm.

In this lecture, I will start by giving an overview of conventional terminal antenna design and comment on its limitations. Then, I will outline current trends in terminal antenna design for 4G systems. I will then introduce a new antenna design paradigm that has the potential to dramatically improve 5G performance. In particular, the paradigm takes into account the interactions of the antenna system with its nearfield and farfield surroundings and provides a powerful framework to optimize these interactions. Finally, I will provide some practical techniques to take advantage of this design paradigm, where each technique offers promising performance gains over the state-of-the-art.

prof. Andreas Springer

Johannes Kepler University Linz, Austria

Wireless Sensor Networks - (How) can they be applied to industrial applications?

Abstract: Wireless Sensor Networks (WSNs) are since many years a very active research area. However, up to now, they have not found significant usage in industrial application apart from low-priority maintenance application. In a first part this talk explores possible reasons for that. In the second part of the talk we will present some recent research results which could provide first steps to the application of WSN in demanding industrial applications. These examples include a demonstrator for real-time data acquisition in a 100 sensor node test environment with sensor nodes relying exclusively on energy harvesting, a low-power but yet accurate synchronization method for sensor nodes using low-frequency oscillators, and algorithms for cooperative synchronization and localization of sensor nodes based on low-complex general purpose hardware.

prof. Costas Psychalinos

University of Patras, Greece

Design of fractional-order analog integrated circuits and systems and their interdisciplinary applications

Abstract: It is known that many dynamic systems in our world can be better described by differential equations of a non-integer-order, i.e. they behave like non-integer-order (fractional-order) systems. Such systems can be found not only in electronics and signal processing, but also in thermodynamics, biology, chemistry, medicine, mechanics, control theory, nanotechnologies, finances etc. Thus fractional-order systems are an emerging area of multidisciplinary research labeled even as the “21st century systems”. Electronic engineers are very interested in applying the concept of fractional calculus. It is motivated mainly by the interdisciplinary nature of this research and possibility to obtain qualitatively new circuit solutions that can provide characteristics not available at integer-order systems. For example the capability for step less control of the slope of frequency characteristics in fractional-order filters in comparison with the corresponding integer-order filters is an attractive feature. Fractional-order impedance circuits are also very promising in modeling electrical properties of biological materials, tissues or cells. Oscillators of fractional-order provide possibility of obtaining higher oscillation frequencies compared to the integer-order counterparts with the same values of passive element parameters offering arbitrary phase shift between output signals.

This speech deals with the design and realization of analog fractional-order circuits, which offer the benefits: (i) capability for on-chip implementation, (ii) capability for low-voltage operation, and (iii) electronic adjustment of their characteristics. Applications of fractional-order circuits, including: a pre-processing stage suitable for the implementation of the Pan-Tompkins algorithm for detecting the QRS complexes of an electrocardiogram (ECG), fractional-order systems used for the modeling of biological tissues, realizations of integrated fractional-order PID controller etc.

Giovanni D'Amore

Keysight Technologies

Unlocking Wideband 5G & mmWave Insights to 110 GHz

Abstract: Exploding frequency ranges and bandwidths of today’s 5G and Emerging Comms PHY research create new challenges in millimeter-wave design validation. Millimeter-wave frequencies expose assumptions of what is, and is not, negligible and steal raw performance including power, losses, noise, and dynamic range. As measurement uncertainties become dramatically wider, making reliable measurements becomes significantly more difficult. Signal generation and analysis systems must be rethought with careful planning.

In this talk, we'll cover the latest cmWave and mmWave scenarios at 28 GHz, 73 GHz, and up to 110 GHz. We’ll present measurement challenges as a series of case studies and “testbed” configurations that can be easily adapted. These testbeds combine software with flexible, high-performance, time & frequency-domain measurement equipment to deliver calibrated, low-EVM wideband signals for 5G, emerging 802.11ad/ay, and back-haul applications with bandwidths up to 5 GHz wide. An ultra-wideband signal analyzer capable of 110 GHz in a single sweep is introduced to hunt for spectral emissions and spurs that typical banded-frequency systems can miss, enabling earlier troubleshooting of risky architectural issues in R&D.

As 5G and emerging wireless standards continue to evolve, wireless designers need flexibility to troubleshoot leading-edge issues in a variety of spectrum bands as well as high performance for more rigorous R&D validation. Join this webcast to learn the latest measurement techniques needed to overcome the challenges of your next wideband design.

prof. Ronald Tetzlaff

Technische Universität Dresden, Germany

Memcomputing in Future Electronic Systems

Abstract: Although, already being part of memory technology offered by several companies, memristors are considered in a strongly increasing number of investigations. Thereby, these devices are considered for neuron models and synapses in neuromorphic systems but also in the development of a new type of computing devices for future electronic systems in order to overcome the limits of the conventional von Neumann architectures. Recent investigations show, that these devices can be applied as memory elements but as well as devices for computation in distributed adaptive systems.

In this contribution, a detailed introduction into the theory of memristors will be provided and recent applications discussed in detail. Especially, a memristor-enhanced robot control system will be proposed. Thereby, results obtained in first investigations will be presented.

prof. Klaus Michael Indlekofer

Hochschule RheinMain, Germany

Virtual Disc Player Concept for Optical Storage Media

Abstract: Optical media archiving and digital preservation as well as data analysis and data recovery require the possibility to read-out the complete contents of optical discs, such as CDs, DVDs, and BDs. Common approaches are based on the usage of ubiquitous optical drives for personal computers. However, this does not allow for an unmodified access to the low-level contents of the discs, since the employed drives already perform the line/channel decoding steps (including error correction in a more or less accurate way).

In this contribution, we discuss a concept which records the pit-land signal stemming directly from the optical pickup. The resulting line/channel code data stream, in turn, is saved to a pitland image file on a host computer in order to enable the best possible archiving of the digital contents of an optical disc (even if it is damaged, incomplete, or non standard-conformant). These image files typically exhibit a high degree of redundancy and, thus, can be archived efficiently by use of lossless data compression algorithms.

Within this concept, demodulation and decoding (including error correction, extraction of the data and multi-media payload as well as accompanying meta-data) is accomplished within a virtual disc player software. Consequently, the complexity of the disc drive can be reduced significantly, moving large parts of the signal processing sub-system from hardware and firmware into the software layer on a host computer. This offers the possibility to employ advanced recursive demodulation and error correction schemes. In general, by implementing the virtual player as open source software which is portable and expandable, the ability to decode historical media formats is no longer bound to legacy hardware and proprietary firmware.